docker-compose change name of main container

Question

I have a simple frontend and backend app. And I have a docker-compose file but it's inside frontend folder. So when I run it both frontend and backend containers are under frontend container (it takes name of the folder) how can I rename this main container? I am using version 3.9

version: "3.9"
services:
  be_service:
    container_name: backend
    build:
      context: ../backend
      dockerfile: ./Dockerfile
    ports:
      - "8089:8080"
  fe_service:
    container_name: frontend
    build:
      context: ./
      dockerfile: ./Dockerfile
    ports:
      - "8088:80"
    depends_on:
      - be_service

Are both containers running the same code (I'd find that a little surprising)? Which thing "takes the name of the folder"? (Also see the COMPOSE_PROJECT_NAME environment variable, which is involved in naming Docker-level objects.) — David Maze
– David Maze, Commented Jul 13, 2021 at 10:41
Does this answer your question? Set $PROJECT_NAME in docker-compose file — Tigerware
– Tigerware, Commented May 28, 2022 at 0:01

Tigerware · Accepted Answer · 2022-09-09 07:32:14Z

84

When refering to your main container, you are probably refering to the project name, which you could usually set via the -p flag. (See other answers)

For docker-compose, you can set the top level variable name to your desired project name.

docker-compose.yml file:

version: "3.9"
name: my-project-name
services:
  myService:
    ...

If you are using Docker Desktop, make sure Use Docker Compose V2 is enabled there.

edited Sep 9, 2022 at 7:32

answered May 28, 2022 at 0:07

Tigerware

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2 Comments

G.Lebret Over a year ago

Be carefull with the name of the project : From the doc : Project names must contain only lowercase letters, decimal digits, dashes, and underscores, and must begin with a lowercase letter or decimal digit.

Khang Over a year ago

This work with window docker version 27.0.3, build 7d4bcd8

Nguyen M. Ho · Accepted Answer · 2021-07-13 11:55:48Z

40

Related to Docker Compose docs you can set your project name with:

docker-compose -p app up --build

with -p app to set your compose container name to app.

answered Jul 13, 2021 at 11:55

Nguyen M. Ho

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1 Comment

Ben Butterworth Dec 20, 2024 at 15:55

This doesn't set the container name to app for me. It only sets the projectname in projectname-servicename-1, so app-yourService-1

rassakra · Accepted Answer · 2022-05-28 09:01:14Z

3

I think that your docker compose file is right and to change the co you can use the containe_name instruction but I think you should run this command when you want to run your application :

docker-compose up --build

edited May 28, 2022 at 9:01

answered Jul 13, 2021 at 6:59

rassakra

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Comments

San Jaisy · Accepted Answer · 2022-05-08 12:34:18Z

0

Use -p to specify a project name

Each configuration has a project name. If you supply a -p flag, you can specify a project name. If you don’t specify the flag, Compose uses the current directory name.

Calling docker-compose --profile frontend up will start the services with the profile frontend and services without specified profiles. You can also enable multiple profiles, e.g. with docker-compose --profile frontend --profile debug up the profiles frontend and debug will be enabled

Also refer https://docs.docker.com/compose/profiles/

answered May 8, 2022 at 12:34

San Jaisy

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Comments

Raj · Accepted Answer · 2024-09-04 09:54:44Z

0

I struggled a bit with the given answers. Then I read the following

"Unlike Compose V1, Compose V2 integrates into the Docker CLI platform and the recommended command-line syntax is docker compose." Also, the version is deprecated.

Ex.: docker compose build (notice no - hyphen)

answered Sep 4, 2024 at 9:54

Raj

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